When you need us, OSI Comfort Specialists is here for you!


Your Full-Service Provider for Fuel, HVAC and More!

Trust OSI Comfort Specialists for the best service around

Bioheat Fuel

With reliable delivery, you’ll always have the heating oil you need.

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Air Conditioning

Stay cool with our central air conditioning and ductless A/C services.

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Our licensed, insured and certified electricians can do any job, big or small!

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We’re your one-stop shop for commercial fuels, equipment, electrical and plumbing services!

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Oil Heat That’s Better for the Environment

Our Bioheat® Fuel burns cleaner than natural gas, so you can stay comfortable while shrinking your carbon footprint!

Breathe Easier with Our Air Purifying Services

Make the air in your home cleaner, safer, healthier and more comfortable with our indoor air quality equipment installation and service.

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Download the OSI Comfort Specialists App

Manage your heating oil supply, equipment service and account wherever you get a signal with our easy-to-use app!

A Family Business That Treats You Like Family

“Comfort You Can Count On” is more than a tagline, it’s our goal every day. From the very beginning, when founder Morris Levi would hand-deliver 5-gallon jugs of heating oil through high snowdrifts to make sure his customers stayed warm, taking care of our neighbors has been at the heart of what we do.

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OSI Comfort Specialist

Serving Nassau, Queens
and Suffolk counties